The vulnerability of the smb2_calc_max_out_buf_len() function in the fs/smb/server/smb2pdu.c module of the Smb file system in the Linux operating system allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.
🗓️ 10 Aug 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 4 Views
| Reporter | Title | Published | Views | Family All 134 |
|---|---|---|---|---|
 | Astra Linux – Vulnerability in Linux 5.10 | 20 May 202605:53 | – | astralinux |
 | CVE-2026-31478 | 22 Apr 202615:11 | – | circl |
 | Linux kernel 安全漏洞 | 22 Apr 202600:00 | – | cnnvd |
 | CVE-2026-31478 | 22 Apr 202613:54 | – | cve |
 | CVE-2026-31478 ksmbd: replace hardcoded hdr2_len with offsetof() in smb2_calc_max_out_buf_len() | 22 Apr 202613:54 | – | cvelist |
 | [SECURITY] [DLA 4561-1] linux-6.1 security update | 2 May 202608:40 | – | debian |
| [SECURITY] [DSA 6238-1] linux security update | 30 Apr 202620:05 | – | debian |
| [SECURITY] [DSA 6243-1] linux security update | 1 May 202619:10 | – | debian |
 | CVE-2026-31478 | 22 Apr 202613:54 | – | debiancve |
 | Debian dla-4561 : linux-config-6.1 - security update | 2 May 202600:00 | – | nessus |
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10 Aug 2026 00:00Current
8.3High risk
Vulners AI Score8.3
CVSS 39.8
CVSS 210
EPSS0.00502